U.S. patent number 10,566,837 [Application Number 15/325,731] was granted by the patent office on 2020-02-18 for power supply device.
This patent grant is currently assigned to FUJI CORPORATION. The grantee listed for this patent is FUJI CORPORATION. Invention is credited to Masaru Saito, Shinji Takikawa.
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United States Patent |
10,566,837 |
Takikawa , et al. |
February 18, 2020 |
Power supply device
Abstract
An electric power supply device for supplying electric power
from a supply side device to a receiver side device including a
mechanism section that operates intermittently with a drive voltage
and a receiver side control section that controls an operation of
the mechanism section with a control voltage that is lower than the
drive voltage, the electric power supply device including: a
regulator section, which is provided on the receiver side device,
that converts a received voltage received via an electric power
supply into the control voltage; a supply voltage adjusting
section, which is provided on the supply side device, that
adjustably supplies the received voltage; and a supply side control
section, which is provided on the supply side device, that controls
the received voltage by controlling the supply voltage adjusting
section.
Inventors: |
Takikawa; Shinji (Nagoya,
JP), Saito; Masaru (Fussa, JP) |
Applicant: |
Name |
City |
State |
Country |
Type |
FUJI CORPORATION |
Chiryu |
N/A |
JP |
|
|
Assignee: |
FUJI CORPORATION (Chiryu,
JP)
|
Family
ID: |
55078043 |
Appl.
No.: |
15/325,731 |
Filed: |
July 17, 2014 |
PCT
Filed: |
July 17, 2014 |
PCT No.: |
PCT/JP2014/069027 |
371(c)(1),(2),(4) Date: |
January 12, 2017 |
PCT
Pub. No.: |
WO2016/009525 |
PCT
Pub. Date: |
January 21, 2016 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20170163090 A1 |
Jun 8, 2017 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H05K
13/0419 (20180801); H05K 13/0417 (20130101); H02J
50/10 (20160201); H05K 13/0885 (20180801); H05K
13/02 (20130101) |
Current International
Class: |
B23P
19/00 (20060101); H05K 13/02 (20060101); H02J
50/10 (20160101) |
Field of
Search: |
;29/832,739 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
2006-313806 |
|
Nov 2006 |
|
JP |
|
2008-98355 |
|
Apr 2008 |
|
JP |
|
Other References
International Search Report dated Oct. 7, 2014 in PCT/JP2014/069027
filed Jul. 17, 2014. cited by applicant.
|
Primary Examiner: Nguyen; Donghai D
Attorney, Agent or Firm: Oblon, McClelland, Maier &
Neustadt, L.L.P.
Claims
The invention claimed is:
1. An electric power supply device for supplying electric power
from a supply side device to a receiver side device including a
mechanism section that operates intermittently with a drive voltage
and a receiver side control section that controls an operation of
the mechanism section with a control voltage that is lower than the
drive voltage, the electric power supply device comprising: a
regulator section, which is provided on the receiver side device,
that converts a received voltage received via an electric power
supply into the control voltage; a supply voltage adjusting
section, which is provided on the supply side device, that
adjustably supplies the received voltage; and a supply side control
section, which is provided on the supply side device, that controls
the received voltage by controlling the supply voltage adjusting
section, a wherein the supply side control section determines a
mechanism operating time period for operation of the mechanism
section, commands the operation of the mechanism section during the
mechanism operating time period by approximately matching the
received voltage to the drive voltage, and lowers the received
voltage below the drive voltage for a control operation time
period, which is a time period except for the mechanism operating
time period.
2. The electric power supply device according to claim 1, further
comprising: a control related section that causes information
related to the operation of the mechanism section to be exchanged
between the receiver side control section and the supply side
control section, wherein the supply side control section determines
the mechanism operating time period by information exchange with
the receiver side control section via the control related
section.
3. The electric power supply device according to claim 1, wherein
the supply side control section causes the received voltage to
approximately match the control voltage during the control
operating time period.
4. The electric power supply device according to claim 1, further
comprising: a contactless electric power supply element connected
to the adjusting supply voltage section; and a contactless electric
power reception element connected to the regulator section, wherein
contactless electric power supply using high frequency alternating
current is performed when the contactless electric power supply
element and the contactless electric power receipt element are
arranged facing each other.
5. The electric power supply device according to claim 4, wherein
the supply voltage adjusting section includes a half-bridge circuit
in which a high voltage side switching element and a low voltage
side switching element are connected in series sandwiching an
output terminal, a direct current power source is connected to both
ends of the half-bridge circuit, the output terminal is connected
to the contactless electric power supply element, and the supply
side control section includes a half-bridge control circuit that
issues alternately and exclusively a high voltage side control
signal that passes through the high voltage side switching element
and a low voltage side control signal that passes through the low
voltage side switching element, and that variably controls at least
one of an occurrence frequency or a signal continuation time of the
high voltage side control signal and the low voltage side control
signal.
6. The electric power supply device according to claim 5, wherein
the half-bridge control section makes the signal continuation time
a constant, controls the occurrence frequency to be high during the
mechanism operating time period, and controls the occurrence
frequency to be low during the control operating time period.
7. The electric power supply device according to claim 1, wherein
multiple receiver side devices that have include the regulator
section are provided, the supply voltage adjusting section is
configured from a drive voltage supply section adjusted such that
the received voltage approximately matches the drive voltage and a
control voltage supply section adjusted such that the received
voltage is lower than the drive voltage, and the supply side
control section causes electric power to be supplied from the drive
voltage supply section to the receiver side device during the
mechanism operation time period, and causes electric power to be
supplied from the control voltage supply section to the receiver
side device during the control operating time period.
8. The electric power supply device according to claim 1, wherein
the supply side device is a main body of a board work machine that
performs specified work on a board, and the receiver side device is
a loading device that is loaded on the board work machine.
9. The electric power supply device according to claim 8, wherein
the main body of the board work machine is a main body of a
component mounter that mounts electronic components on a board, the
loading device is a component supply device that is detachably
loaded on the component mounter and that supplies electronic
components, the mechanism section includes a motor, and the
receiver side control section controls an operation of the
motor.
10. The electric power supply device according to claim 9, wherein
an upper control section provided on the main body of the component
mounter sends various command information for operating each of the
motors of the multiple feeder devices to each receiver side control
section via the supply side control section based on a progress of
the mounting sequence that indicates a mounting order of the
electronic components and the feeder devices that supply the
electronic components, and the supply side control section
determines the mechanism operating time period of each of the
motors of the multiple feeder devices based on each piece of the
command information.
Description
TECHNICAL FIELD
The present application relates to a power supply device that
supplies electric power from a supply side device to a receiver
side device provided with a mechanism section that operates
intermittently with a drive voltage, and a control section that
operates continuously with a control voltage that is lower than the
drive voltage.
BACKGROUND ART
Board work machines such as solder printers, component mounters,
reflow ovens, and board inspection machines are used to produce
boards mounted with many components. These board work machines are
often connected to each other to form a board production line.
Among this equipment, component mounters provided with a board
conveyance device, a component supply device, a component transfer
device, and a control device are typical. A typical example of a
component supply device is a feeder device that feeds tape in which
many electronic components are stored at a specified pitch. Feeder
devices are flat and thin in the width direction, and typically
multiple feeder devices are arranged in a row on a base of the
component mounter.
As an attachment construction for multiple feeder devices, a direct
attachment construction and a pallet attachment construction are
used. With a direct attachment constructions, component supply
devices are directly attached on the base. With a pallet attachment
construction, a removable pallet member provided between the base
and the multiple feeder devices is used. Feeder devices have a
motor in a mechanism that supplies components, and also a component
supply control section that controls operation of the motor. The
component supply control section is linked to a control device on
the main body side of the component mounter via a communication
link or the like, and exchanges commands and replies and so on.
Conventionally, contact-type electric power supply multi-terminal
connectors are used for supplying electricity to the feeder device
from the main body of the component mounter. However, with
multi-terminal connectors, there is a problem of terminals being
deformed or damaged due to repeated detachment and attachment. As a
countermeasure to this, in recent years, use of contactless
electric power supply devices has progressed. The motor of a feeder
device operates to supply a new component when a component has been
used, thus operation is intermittent. However, in spite of this, if
electric power is always supplied to the motor, with both a
configuration that uses a contact type electric power supply and a
configuration that uses a contactless electric power supply, there
is a problem that the electric power loss increases and the
efficiency drops. Also, there are problems such as that, if the
temperature of a feeder device increases due to heat caused by
electric power loss, it is more likely that static electricity will
occur at the tape in which components are stored, or, as a
countermeasure to the rising temperature, it becomes necessary to
provide a cooling mechanism or to make the feeder device large in
order to curtail the temperature increase. The technology disclosed
in patent literature 1 and 2 is proposed as a countermeasure to
these problems.
With the technology of patent literature 1, a component supply
device provided with a motor is also provided with a memorizing
means that stores in advance a component loading schedule based on
a production program, a determining means that determines the
length of a period for which no component supply is scheduled based
on the progress of the component loading schedule, and a control
device that sets the motor to an energy saving mode (for example, a
mode in which supply of electric power is cut off) when it is
determined that the length of the period in which no component
supply is scheduled is longer than a specified period. According to
this, it is possible to curtail electric power consumption without
making the device complex.
Also, the electronic component mounting device of patent literature
2 is provided with multiple driving power supply circuits that
supply driving power individually to multiple work modules, a
circuit disconnecting and connecting means that disconnects and
connects driving power circuits except for a specified driving
power circuit, and a control device that stops supply of driving
power to work modules except for a specified work module by
controlling the circuit disconnecting and connecting means based on
predetermined driving power supply control conditions. According to
this, it is possible to stop supply of driving power to a work
module except for a specified module for specified conditions,
thereby eliminating power loss caused by standby electric power,
air leaks and the like, thus contributing to energy efficiency.
CITATION LIST
Patent Literature
Patent Literature 1: JP-A-2008-98355
Patent Literature 2: JP-A-2006-313806
SUMMARY
However, for conventional feeder devices, generally, the control
voltage at which the component supply control section operates is
lower than the drive voltage at which the motor operates. Thus,
feeder devices operate by receiving received voltage approximately
equal to the drive voltage in order to directly drive the motor,
and converting the received voltage into control voltage in order
to operate the component supply control section. However, the
in-built regulator used to convert the voltage suffers from lowered
conversion efficiency and increased electric power loss the greater
the difference between the received voltage and the control
voltage. Here, because the motor only operates intermittently, it
is not necessary to supply electricity all the time, it is
sufficient to supply electricity only during operation. On the
other hand, the component supply control section must always
receive a supply of electric power and must operate
continuously.
As above, the operating voltages of the motor and the component
supply control section are different, and there is a difference in
operation between intermittent operation and continuous operation.
The technology of patent literature 1 and 2 cannot be said to be
definitely effective for reducing the electric power loss and heat
loss of a feeder device with a regulator and two types of electric
load. For example, even if a motor is controlled in an
energy-saving mode by a control means as disclosed in patent
literature 1, the electric power loss of the regulator is not
reduced. Further, it is difficult to apply the technology of patent
literature 1 and 2 with respect to a configuration that supplies
electricity to a feeder device using contactless electric power
supply. For example, when stopping supply of driving power to a
feeder device using the control means disclosed in patent
literature 2, if contactless electric power supply is stopped, the
component supply control section ceases to operate.
Note that use of a contactless electric power supply method and a
contactless electric power supply device is not limited to a feeder
device of a component mounter; use may be applied to a wide range
of fields such as other types of board work machines and processing
machines and assembly machines that produce other goods.
The present disclosure takes account of such problems with
conventional technology, and an object thereof is to provide an
electric power supply device that effectively reduces electric
power loss and temperature increase while maintaining reliable
operation of a receiver side device when supplying electric power
from a supply side device to a receiver side device with a
mechanism section that operates intermittently by a high drive
voltage, and a control section that operates continuously by a low
control voltage.
In order to solve the above problems, the disclosure is an electric
power supply device for supplying electric power from a supply side
device to a receiver side device including a mechanism section that
operates intermittently with a drive voltage and a receiver side
control section that controls an operation of the mechanism section
with a control voltage that is lower than the drive voltage, the
electric power supply device including: a regulator section, which
is provided on the receiver side device, that converts a received
voltage received via an electric power supply into the control
voltage; a supply voltage adjusting section, which is provided on
the supply side device, that adjustably supplies the received
voltage; and a supply side control section, which is provided on
the supply side device, that controls the received voltage by
controlling the supply voltage adjusting section; wherein the
supply side control section grasps a mechanism operating time
period for which operation of the mechanism section is possible,
allows operation of the mechanism section during the mechanism
operating time period by approximately matching the received
voltage to the drive voltage, and lowers the received voltage below
the drive voltage for a control operation time period, which is a
time period except for the mechanism operating time period.
Advantageous Effects
According to the present disclosure, the supply side control
section allows operation of the mechanism section during the
mechanism operating time period by approximately matching the
received voltage to the drive voltage, and lowers the received
voltage below the drive voltage for a control operation time
period, which is a time period except for the mechanism operating
time period. Thus, for the mechanism operating time period, during
which the mechanism section may operate, the receiver side device
receives high received voltage approximately the same as the drive
voltage, meaning that the mechanism section and the receiver side
control section operate reliably. On the other hand, during the
control operating time period, during which the mechanism section
does not operate, the receiver side device receives low received
voltage, such that the control section operates reliably. Here,
because the difference between the received voltage and the control
voltage is small during the control operating time period, the
converting efficiency of the regulator improves, and the electric
power loss and temperature increase of the receiver side device are
effectively reduced. Further, due to the temperature increase being
effectively decreased, the cooling configuration of heat
dissipation fins and the like can be simplified, and the receiver
side device can be made smaller and lighter.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view showing the overall configuration of a
component mounter equipped with an electric power supply device
that is a first embodiment of the present disclosure.
FIG. 2 is a block diagram showing the configuration of the electric
power supply device of the first embodiment.
FIG. 3 is a circuit diagram showing a half-bridge circuit.
FIG. 4 shows graphs of the waveforms of the high voltage side
control signal and the low voltage side control signal output by
the half-bridge control section during the mechanism operating time
period.
FIG. 5 shows graphs of the waveforms of the high voltage side
control signal and the low voltage side control signal output by
the half-bridge control section during the control operating time
period.
FIG. 6 shows a basic circuit of a regulator section.
FIG. 7 schematically shows the change in the element voltage and
element current when the state of the switching element of the
regulator section changes from a cutoff state to a conducting
state.
FIG. 8 is a block diagram showing the configuration of the electric
power supply device of a second embodiment.
FIG. 9 is a block diagram showing the configuration of the electric
power supply device of a third embodiment.
DESCRIPTION OF EMBODIMENTS
A first embodiment of the present disclosure, electric power supply
device 1, is described below with reference to FIGS. 1 to 7. FIG. 1
is a perspective view showing the overall configuration of a
component mounter equipped with an electric power supply device
that is a first embodiment of the present disclosure. In FIG. 1,
the direction from the left rear to the front right in which board
K is loaded and unloaded is the X-axis direction, the direction
from the right rear to the front left is the Y-axis direction, and
the vertical direction is the Z-axis direction. Component mounter 9
is configured from board conveyance device 92, multiple feeder
devices 2, pallet member 3, component transfer device 94, component
camera 95, and control device 96 (refer to FIG. 2) assembled on
base 91. Board conveyance device 92, feeder devices 2, component
transfer device 94, and component camera 95 are controlled from
control device 96 such that each performs specified work.
Board conveyance device 92 loads board K to a mounting position,
fixes board K in position, and unloads board K. Board conveyance
device 92 is configured from items such as first and second guide
rails 921 and 922, a pair of conveyor belts, and a clamping device.
First and second guide rails 921 and 922 extend in the conveyance
direction (X-axis direction) crossing the central upper portion of
base 91, and are assembled on base 91 so as to be parallel to each
other. A pair of conveyor belts (not shown) are arranged facing
each other on the inside of first and second guide rails 921 and
92. The pair of conveyor belts revolve with both edges of board K
in contact with the conveyance surface of the conveyor belts and
load/unload board K to/from a mounting position set in a center
section of base 91. A clamping device (not shown) is provided below
the conveyor belts at the mounting position. The clamping device
pushes up board K and clamps it in a horizontal state so as to fix
it at the mounting position. This allows component transfer device
94 to perform mounting operation at the mounting position.
The multiple feeder devices 2 each consecutively supply electronic
components. Feeder device 2 is flat and thin in the width direction
(X-axis direction), and extends out in the vertical direction
(Z-axis direction) and front-rear direction (Y-axis direction).
Multiple feeder devices 2 are loaded in a line on the top surface
of pallet member 3 in the width direction (X-axis direction). Each
feeder device 2 includes main body section 22, supply reel 23
provided on the rear section of main body section 22, and component
takeout section provided at the front edge of main body section 22.
Long thin tape (not shown) in which many electronic components are
housed at a specified pitch is wound around and held by supply reel
23. This tape is indexed at the specified pitch each time by a
mechanism section (not shown) such that the electronic components
are exposed and consecutively supplied to component takeup section
24. Feeder device 2 includes motor 46 (refer to FIG. 2) in the
mechanism section, and further includes component supply control
section 44 (refer to FIG. 2) that controls operation of motor
46.
Pallet member 3 is for loading multiple feeder devices 2, and is
detachably held on the top surface of base 91. Pallet member 3 is a
component of the main body of component mounter 9, and is formed
from bottom plate section 31 and front plate section 32. Bottom
plate section 31 is a rectangular plate with a width dimension
(dimension in the X-axis direction) smaller than the width
dimension of base 91. Multiple positioning sections that define the
loading position of feeder device 2 are provided on the upper
surface of bottom plate section 31. The positioning sections engage
with an engaging section provided on the bottom surface of feeder
device 2. As an example of a combination of positioning section and
engaging section, a groove-shaped slot extending the Y-axis
direction and a protruding section that is inserted into the slot
may be considered. Front plate section 32 is established on the
front edge of bottom plate section 31. Feeder device 2 is loaded
contacting bottom plate section 31 and front plate section 32 of
pallet member 3.
Component transfer device 94 picks up a component from component
take-out section 24 of each feeder device 2, moves the component to
board K held at a fixed position and mounts the component on the
board K. Component transfer device 94 is an XY robot type device
that is capable of moving horizontally in the X-axis direction and
the Y-axis direction. Component transfer device 94 is configured
from pair of Y-axis rails 941 and 942, Y-axis slider 943, head
holding section 944, suction nozzle 945, and the like. The pair of
Y-axis rails 941 and 942 extend in the lengthwise direction of base
91 (the Y-axis direction), and are provided above board conveyance
device 92 and feeder device 2. Y-axis slider 943 is mounted on
Y-axis rails 941 and 942 so as to be movable in the Y-axis
direction. Head holding section 944 is mounted on Y-axis slider 943
so as to be movable in the X-axis direction. Head holding section
944 is driven horizontally in two directions (X-axis direction and
Y-axis direction) by two servo motors. Suction nozzle 945 is
exchangeably held on the lower surface head holding section 944.
Suction nozzle 945 has a pickup opening at the lower end and picks
up an electronic component at the pickup opening using negative
pressure.
Component camera 95 is provided facing upwards on an upper surface
of base 91 between board conveyance device 92 and component supply
device 93. Component camera 95 detects the state of a picked up
component by imaging the component as it is moved from feeder
device 2 to above board K by suction nozzle 945. After component
camera 95 detects the deviation in the pickup position and rotation
and so on of the component, control device 96 performs fine
adjustments of component mounting operation as necessary, and
rejects components for which mounting is difficult.
Control device 96 is provided on base 91. Control device 96 stores
a mounting sequence that defines the order of electronic components
to be mounted on board K and the feeder devices 2 that supply the
electronic components. Control device 96 controls component
mounting operations according to the mounting sequence and based on
imaging data of component camera 95, detection data of sensors that
are not shown, and the like. Also, control device 96 sequentially
collects and updates operating data such as production quantity of
completed boards K, mounting time required to mount the electronic
components, and occurrences of component pickup errors.
Turning to a description of the first embodiment of electric power
supply device 1. The embodiment of electric power supply device 1
is a device that supplies electric power in a contactless manner
from pallet member 3 to feeder device 2. Pallet member 3
corresponds to the supply side device of the present disclosure,
the main body of the board work machine, and the main body of
component mounter 9. On the other hand, feeder device 2 corresponds
to the receiver side device of the present disclosure, the loading
device, and the component supply device. FIG. 2 is a block diagram
showing the configuration of the electric power supply device of
the first embodiment. In FIG. 2, a range corresponding to one
feeder device 2 is shown by a single dotted line. The thick arrows
in FIG. 2 represent the flow of electric power, and the thin arrows
represent the flow of information and control.
Feeder device 2 includes, as configuration elements of electric
power supply device 1, receiver coil 41, rectifier section 42,
regulator section 43, and receiver side related section 45. Also,
feeder device 2 includes component supply control section 44 and
motor 46 as electric loads to which electric power is supplied.
Pallet member 3 includes, as configuration elements of electric
power supply device 1, direct current power source 51, half-bridge
circuit 52, supply coil 53, supply side control section 54, half
bridge control section 55, and supply side related section 56.
Supply coil 53 and receiver coil 41 are an electromagnetic coupling
type contactless electric power supply element and a contactless
electric power reception element. Supply coil 53 and receiver coil
41 may be replaced by another type of element, such as a pair of
elements for electrostatic coupling.
Direct current power source 51 on the pallet member 3 side is
connected to both ends of half-bridge circuit 52, and supplies
specified direct current voltage Vd. An example of direct current
power source 51 is a rectifier type electric power source device
that uses a commercial frequency current and outputs a rectified
current.
FIG. 3 is a circuit diagram showing half-bridge circuit 52.
Half-bridge circuit 52 is configured of high voltage side switching
element 52H and low voltage side switching element 52L connected in
series and sandwiching output terminal 529. In detail, with high
voltage side switching element 52H, positive side terminal 521 is
connected to positive side terminal 511 of direct current power
source 51, load side terminal 522 is connected to output terminal
529, and control terminal 523 is connected to half-bridge control
section 55. On the other hand, with low voltage side switching
element 52L, positive side terminal 524 is connected to output
terminal 529, load side terminal 525 is connected to load side
terminal 512 of direct current power source 51, and control
terminal 526 is connected to half-bridge control section 55. Also,
output terminal 529 is connected to an end, that is 531, of supply
coil 53, and load side terminal 525 of low voltage switching
element 52L is connected to the other end, that is 532, of supply
coil 53. Direct current power source 51 and half-bridge circuit 52
correspond to the supply voltage adjusting section of the present
disclosure.
Supply coil 53 is formed by a conductor being wound around a C-type
core, an E-type core, or the like a specified number of times.
Supply coil 53 may be configured using known technology. Note that,
a resonance capacitor may be connected in parallel or in series to
supply coil 53 to configure a resonance circuit. The above core and
resonance capacitor are not required elements.
Supply side control section 54 exchanges information with component
supply control section 44 via supply side related section 56 and
receiver side related section 45. Also, supply side control section
54 exchanges information with control device 96 that corresponds to
the upper control section of the present disclosure. Supply side
control section 54 exchanges information related to operation of
motor 46, so as to grasp the mechanism operating time period during
which motor 46 of each feeder device 2 may operate. Also, supply
side control section 54 sets the time period other than the
mechanism operating time period as the control operating time
period.
Further, supply side control section 54 sends a different voltage
setting command CV to half-bridge control section 55 for the
mechanism operating time period and the control operating time
period. For example, there may be two voltage setting commands CV,
"High" for the mechanism operating time period, and "Low" for the
control operating time period. Supply side control section 54 may
be configured to include a CPU that operates software.
In the first embodiment, the time period in which motor 46 of each
feeder device 2 operates is controlled largely by control device
96. Control device 96 grasps the feeder device 2 from which an
electronic component is picked up by suction nozzle 945 from
component takeout section 24 based on the progress of the mounting
sequence being performed. Based on this, control device 96 sends
component supply operation command information with respect to a
feeder device 2 for which electronic components at component
takeout section 24 have run out. This command information is
relayed by supply side control section 54 and transmitted to
component supply control section 44 via supply side related section
56 and receiver side related section 45. Component supply control
section 44 operates motor 46 according to the command information
so as to perform component supply operation. In this manner, supply
side control section 54 is able to grasp the mechanism operating
time period of the feeder device 2 based on the relayed command
information.
Not being restricted to the above, there are various methods of
controlling the time period in which motor 46 operates. For
example, a sensor that detects the presence of an electronic
component at component takeout section 24 may be provided, and when
electronic components run out, component supply control section 44
may autonomously cause motor 46 to operate. In this manner, supply
side control section 54 is able to grasp the mechanism operating
time period of the feeder device 2 by receiving information
regarding operating motor 46 from component supply control section
44.
Further, for example, the configuration may be such that component
supply control section operates motor 46 based on a predetermined
time schedule. In this manner, supply side control section 54 is
able to grasp the mechanism operating time period of the feeder
device 2 based on the shared time schedule. Thus, information
exchange between supply side control section 54 and component
supply control section 44, and information exchange between supply
side control section 54 and control device 96, are not
essential.
Half-bridge control section 55 functions as a portion of supply
side control section 54. Half-bridge control section 55 variably
controls the occurrence frequency of high voltage side control
signal CH and low voltage side control signal CL according to
voltage setting commands CV. Half-bridge control section 55 outputs
high voltage side control signal CH to control terminal 523 of high
voltage side switching element 52H of half-bridge circuit 52. In a
similar manner, half-bridge control section 55 outputs low voltage
side control signal CL to control terminal 526 of low voltage side
switching element 52L of half-bridge circuit 52.
FIG. 4 shows graphs of the waveforms of high voltage side control
signal CH and low voltage side control signal CL output by
half-bridge control section 55 during the mechanism operating time
period. Further, FIG. 5 shows graphs of the waveforms of high
voltage side control signal CH and low voltage side control signal
CL output by half-bridge control section 55 during the control
operating time period. The horizontal axis in FIGS. 4 and 5 is the
same time axis t. Also, in FIGS. 4 and 5, the upper section shows
high voltage side control signal CH, the middle section shows low
voltage side control signal CL, and the lower section shows
alternating current voltage Va output from half-bridge circuit 52
and applied to supply coil 53.
As shown in FIG. 4, half-bridge control section 55 alternately and
exclusively issues high voltage side control signal CH and low
voltage side control signal CL During signal continuation time T1
during which high voltage side control signal CH is being issued,
there is a conductance state between positive side terminal 521 and
load side terminal 522 of high voltage side switching element 52H.
Also, during signal continuation time T1, low voltage side signal
CL is not issued, and there is a cutoff state between positive side
terminal 524 and load side terminal 525 of low voltage side
switching element 52L. At this time, supply coil 53 is in a state
with direct current voltage Vd being applied between terminals 531
and 532.
Conversely, during signal continuation time T2 during which low
voltage side control signal CL is being issued, high voltage side
control signal CH is not issued. During signal continuation time
T2, high voltage side switching element 52H is in a cutoff state,
and low voltage side switching element 52L is in a conductive
state. At this time, supply coil 53 is cut off from direct current
power source 51 and is in a state of no voltage with terminals 531
and 532 being shorted. Accordingly, supply coil 53 alternates
between a state in which direct current voltage Vd is applied and a
state of no voltage, that is, a state in which alternating current
voltage Va is applied.
Further, during the mechanism operating time period, half-bridge
control section 55 receives "High" for the voltage setting command
CV and controls the occurrence frequency of high voltage side
control signal CH and low voltage side control signal CL to be
highest, as shown in FIG. 4. By this, the average value VaM of
alternating current voltage Va allied to supply coil 53 during the
mechanism operating time period is just under half direct current
voltage Vd. Also, during the control operating time period,
half-bridge control section 55 receives "Low" for the voltage
setting command CV and controls the occurrence frequency of high
voltage side control signal CH and low voltage side control signal
CL to be lower than that during the mechanism operating time
period. In the example of FIG. 5, the waveforms of high voltage
side and low voltage side control signals CH and CL miss out every
other peak with respect to the waveforms of FIG. 4. By this, the
occurrence frequency of alternating current voltage Va applied to
supply coil 53 during the control operating time period is halved,
and the average value VaC is reduced to around half of average
value VaM during the mechanism operating time period.
Receiver coil 41 on the feeder device 2 side is arranged so as to
be capable of facing supply coil 53. That is, to match the
arrangement of supply coil 53 with respect to front plate section
32 or bottom plate section 31 of pallet member 3, receiver coil is
arranged on the front surface or bottom surface of feeder device 2.
Receiver coil 41, similar to supply coil 53, is formed by a
conductor being wound around a core. However, the winding quantity
of receiver coil 41 may be different to the winding quantity of
supply coil 53. When feeder device 2 is loaded to the loading
position on pallet member 3, supply coil 53 and receiver coil 41
are arranged facing each other. When this occurs, the cores of both
41 and 53 form a good magnetic circuit. By this, receiver coil 41
is able to receive high frequency electric power from supply coil
53 in a contactless manner. Both ends of receiver coil 41 are
connected to input terminals 421 and 422 of rectifier section
42.
Rectifier section 42 rectifies the high frequency electric power
received by receiver coil 41 into direct current, and outputs the
direct current to regulator section 43 and motor 46. Rectifier
section 42 may be, for example, a full-wave rectifier in which four
diodes are bridge connected, or may be used together with a
smoothing circuit. Here, the direct current voltage output from
output terminals 423 and 424 of rectifier 42 is received voltage
Vr. Received voltage Vr corresponds to the effective voltage of the
high frequency electric power received by receiver coil 41. The
connection between output terminals 423 and 424 of rectifier
section 42, and motor 46 may be direct or may be via an open/close
switch such that cutting off is possible. However, note that the
connection between output terminals 423 and 424, and regulator
section 43 is direct.
Regulator section 43 converts received voltage Vr into control
voltage VC and outputs control voltage VC. FIG. 6 shows a basic
circuit of regulator section 43. As shown, regulator section 43 is
configured from a step-down switching regulator circuit First, the
connection method regarding input and output of regulator section
43 is described. Positive side input terminal 431 of regulator
section 43 is connected to positive side output terminal 423 of
rectifier section 42; load side input terminal 432 is connected to
load side output terminal 424 of rectifier section 42. Positive
side output terminal 433 of regulator 43 is connected to positive
side terminal 441 of component supply control section 44; load side
output terminal 434 is connected to load side terminal 442 of
component supply control section 44.
Described next is the internal circuit configuration of regulator
section 43. Positive side input terminal 431 of regulator section
43 is connected to terminal 436 of switching element 435. Diode 438
is connected between terminal 437 of switching terminal 435 and
load side input terminal 432. Diode 438 allows current to flow from
load side input terminal 432 to terminal 437 of switching terminal
435 and blocks current in the other direction. Further, coil 439 is
connected between terminal 437 of switching terminal 435 and
positive side output terminal 433. Coil 439 has a function to
smooth the pulse flow output from switching terminal 435. On the
other hand, load side input terminal 432 and load side output
terminal 434 are connected directly internally.
Next, operations and effects of the first embodiment of electric
power supply device 1 configured as above are described. As given
above, supply side control section 54 is able to grasp the
mechanism operating time period and the control operating period
time of each feeder device 2 by relaying command information of
component supply operations. Then, during the mechanism operating
time period, supply side control section 54 sends "High" as voltage
setting command CV to half-bridge control section 55. Half-bridge
control section 55 outputs low voltage side control signal CL and
high voltage side control signal CH shown in FIG. 4 and for which
the occurrence frequency is highest to half-bridge circuit 52. By
this, received voltage Vr approximately equals drive voltage VM,
thus operation of motor 46 becomes possible. Also, even though
received voltage Vr is high, because regulator section 43 outputs
control voltage VC after converting the voltage, component supply
control section 44 operates.
On the other hand, during the control operating time period, supply
side control section 54 sends "Low" as voltage setting command CV
to half-bridge control section 55. Half-bridge control section 55
outputs low voltage side control signal CL and high voltage side
control signal CH shown in FIG. 5 and for which the occurrence
frequency is highest to half-bridge circuit 52. By this, because
received voltage is reduced to about half of drive voltage VM,
motor 46 becomes unable to operate. Also, because regulator section
43 outputs control voltage VC after converting the relatively low
voltage received voltage Vr, component supply control section 44
operates. At this time, command information of component supply
operation is not sent to feeder device 2, so there is no problem
with motor 46 not operating.
Here, we should pay attention to loss Wt that occurs during
switching operation of regulator section 43. FIG. 7 schematically
shows the change in element voltage Vsw and element current Isw
when the state of switching element 435 of regulator section 43
changes from a cutoff state to a conducting state. In FIG. 7,
switching time .DELTA.t is the period from starting time t1 to
finishing time t2. Element voltage Vsw is the voltage that occurs
between terminal 436 and terminal 437 of switching element 435
(refer to FIG. 6); element current Isw is the current flowing from
terminal 436 towards terminal 437 (refer to FIG. 6). Here, element
voltage Vsw and element current Isw during switching operation are
shown schematically changing simply in a straight line manner.
Also, element voltage Vsw, which is a solid line in FIG. 7, is
during the mechanism operating time period; element voltage Vsw2,
which is a dashed line in FIG. 7, is during the control operating
time period.
Before starting time t1, switching element 435 is considered to be
in a completely cutoff state. Thus, element voltage Vsw is the same
as received voltage Vr and element current Isw is zero. During
switching time .DELTA.t, the resistance value of switching element
435 can be thought of as changing. That is, at starting time t1,
when the resistance value reduces from infinity to a finite value,
element current Isw starts to flow and element voltage Vsw start
reducing. Further, as time elapses the resistance value reduces,
element current Isw increases, and element voltage Vsw reduces.
Then, at finishing time t2, switching element 435 is considered to
be in a completely conductive state. At this time, element voltage
Vsw is zero, and element current Isw becomes a largely fixed
current Io, which is dependent on the load resistance value of
component supply control section 44. Accordingly, loss Wt that
occurs due to the change in element voltage Vsw and element current
Isw is calculated as follows (equation 1).
Equation 1
.times..intg..times..times..times..times..times..times..times.d.times..DE-
LTA..times..times. ##EQU00001##
In equation 1, loss Wt is a function of received voltage Vr output
from rectifier section 42. Accordingly, when received voltage Vr
drops as shown by the dashed line in FIG. 7, loss Wt of regulator
section 43 decreases proportionately. In reality, element voltage
Vsw and element current Isw change in a non-linear manner, but
qualitatively speaking, it is a fact that loss Wt decreases.
Therefore, loss Wt of regulator section 43 during the control
operating time period is reduced more than with conventional
technology, for which received voltage Vr is not reduced.
Note that the occurrence frequency of high voltage side control
signal CH and low voltage side control signal CL during the control
operating time period is not limited to being controlled to be
reduced by half, the occurrence frequency may be controlled to be
reduced by one third or one quarter or the like. The purpose of
performing control so as to lower the occurrence frequency is to
variably adjust average value Vac of alternating current voltage Va
of supply coil 53 so as to adjust received voltage Vr. Therefore,
from this point of view, it is possible to set the occurrence
frequency to a suitable value such that received voltage Vr is
reduced to approximately be the same as control voltage VC. At this
time, because regulator section 43 does not have a function to
raise the voltage, it is not desirable to lower received voltage Vr
below control voltage VC. Hypothetically, in a case in which a
regulator section with a raising function was used, loss Wt would
increase as received voltage Vr became smaller than control voltage
VC43. That is, making received voltage Vr be the same as control
voltage VC during the control operating time period is ideal and
enables loss Wt to be minimized.
Electric power supply device 1 of the first embodiment is for
supplying electric power from pallet member 3 (supply side device)
to feeder device 2 (receiver side device) including motor 46
(mechanism section) that operates intermittently with drive voltage
VM and component supply control section 44 (receiver side control
section) that controls an operation of motor 46 with control
voltage VC that is lower than drive voltage VM, electric power
supply device 1 including: regulator section 43, which is provided
on feeder device 2, that converts received voltage Vr received via
an electric power supply into control voltage VC; direct current
power source 51 and half-bridge circuit 52 (supply voltage
adjusting section), which are provided on pallet member 3, that
adjustably supply received voltage Vr; and supply side control
section 54 and half-bridge control section 55, which are provided
on pallet member 3, that control received voltage Vr by controlling
half-bridge circuit 52; wherein supply side control section 54
grasps a mechanism operating time period for which operation of
motor 46 is possible, allows operation of motor 46 during the
mechanism operating time period by approximately matching received
voltage Vr to drive voltage VM, and lowers received voltage Vr
below drive voltage VM for a control operation time period, which
is a time period except for the mechanism operating time
period.
According to this, supply side control section 54 allows operation
of motor 46 during the mechanism operating time period by
approximately matching received voltage Vr to drive voltage VM, and
lowers received voltage Vr below drive voltage VM for a control
operation time period, which is a time period except for the
mechanism operating time period. Therefore, for the mechanism
operating time period, during which motor 46 may operate, feeder
device 2 receives high received voltage Vr approximately the same
as drive voltage VM, meaning that motor 46 and component supply
control section 44 operate reliably. On the other hand, during the
control operating time period, during which motor 46 does not
operate, feeder device 2 receives low received voltage Vr, such
that component supply control section 44 operates reliably. Here,
because the difference between received voltage Vr and control
voltage VC is small during the control operating time period, the
converting efficiency of regulator 43 improves, and the electric
power loss and temperature increase of feeder device 2 are
effectively reduced. Further, due to the temperature increase being
effectively decreased, the cooling configuration of heat
dissipation fins and the like can be simplified, and feeder device
2 can be made smaller and lighter.
Further, electric power supply device 1 of the first embodiment is
also provided with supply side related section 56 and receiver side
related section 45 (control related section) that causes
information related to the operation of motor 46 to be exchanged
between component supply control section 44 and supply side control
section 54, and supply side control section 54 grasps the mechanism
operating time period by information exchange with component supply
control section 44 via supply side related section 56 and receiver
side related section 45.
Accordingly, supply side control section 54 is able to grasp the
mechanism operating time period by receiving information regarding
operating motor 46 from component supply control section 44.
Therefore, at any moment at which motor 46 operates, feeder device
2 is certainly able to receive high received voltage Vr, meaning
that operational reliability is extremely high.
Further, with electric power supply device 1 of the first
embodiment, supply side control section 54 causes received voltage
Vr to approximately match control voltage VC during the control
operating time period.
Accordingly, loss Wt of regulator section 43 during the control
operating time period is minimized, meaning that the effects of
reducing electric power loss and temperature increase in feeder
device 2 are remarkable.
Further, electric power supply device 1 of the first embodiment is
also provided with a supply coil 53 (contactless electric power
supply element) connected to half-bridge circuit 52, and receiver
coil 41 (contactless electric power reception element) connected to
regulator section 43 via rectifier section 42, and contactless
electric power supply using high frequency alternating current is
performed when supply coil 53 and receiver coil 41 are arranged
facing each other.
Accordingly, the effects of reducing electric power loss and
temperature increase are remarkable for feeder device 2 supplied
with electric power by electric power supply device 1 via
contactless electric power supply.
Further, with electric power supply device 1 of the first
embodiment, the supply voltage adjusting section includes
half-bridge circuit 52 in which high voltage side switching element
52H and low voltage side switching element 52L are connected in
series sandwiching output terminal 529, direct current power source
51 is connected to both ends of half-bridge circuit 52, output
terminal 529 is connected to terminal 531 of supply coil 53, and
supply side control section 54 includes half-bridge control section
55. Half-bridge control section 55 issues alternately and
exclusively high voltage side control signal CH that passes through
high voltage side switching element 52H and low voltage side
control signal CL that passes through low voltage side switching
element 52L, and variably controls the occurrence frequency of high
voltage side control signal CH and low voltage side control signal
CL.
Accordingly, using half-bridge circuit 52, it is possible to
variably adjust average value Vac of alternating current voltage Va
of supply coil 53, enabling received voltage Vr received by feeder
device 2 to be adjusted variably. Half-bridge circuit 52 and
half-bridge control section 55 are cheap and have a simple circuit
configuration, contributing to lower costs for pallet member 3.
Further, with electric power supply device 1 of the first
embodiment, half-bridge control section 55 makes signal
continuation times T1 and T2 a constant, controls the occurrence
frequency to be high during the mechanism operating time period,
and controls the occurrence frequency to be low during the control
operating time period.
Accordingly, by performing control to make the occurrence frequency
of high voltage side control signal CH and low voltage side control
signal CL low, it is possible to variably adjust average value Vac
of alternating current voltage Va of supply coil 53, enabling
received voltage Vr received by feeder device 2 to be adjusted
variably. Control to make the occurrence frequency low can be
performed by a control circuit with a simple configuration compared
to, for example, a method of variably controlling signal
continuation times T1 and T2 by pulse width modulation. In
addition, by making the occurrence frequency low by one half, one
third, one quarter, and so on as appropriate, received voltage Vr
is approximately the same as control voltage VC, and loss Wt of
regulator section 43 can be minimized. Thus, this contributes
greatly to lowering the cost of pallet member 3, giving excellent
cost performance.
Further, with electric power supply device 1 of the first
embodiment, the supply side device is a main body of a board work
machine that performs specified work on board K, and the receiver
side device is a loading device that is loaded on the board work
machine. In addition, the main body of the board work machine is
pallet member 3 that comes with a main body of component mounter 9
that mounts electronic components on board K, the loading device is
multiple feeder devices 2 that are detachably loaded on component
mounter 9 and that supply electronic components, the mechanism
section includes motor 46, and the receiver side control section is
component supply control section 44 that controls an operation of
motor 46.
Accordingly, by electric power supply device 1 of the first
embodiment being built in to the board work machine, specifically,
component mounter 9, effects of reducing electric power loss and
temperature increase for feeder device 2 are remarkable.
Further, with electric power supply device 1 of the first
embodiment, control device 96 (upper control section) provided on
the main body of the component mounter sends various command
information for operating each motor 46 of the multiple feeder
devices 2 to each component supply control section 44 via supply
side control section 54 based on the progress of the mounting
sequence that indicates the mounting order of the electronic
components and the feeder devices 2 that supply the electronic
components, and supply side control section 54 grasps the mechanism
operating time period of each motor 46 of the multiple feeder
devices 2 based on each piece of the command information.
Thus, supply side control section 54 is able to grasp the mechanism
operating time period of the feeder devices 2 based on the relayed
command information. Therefore, at any moment at which motor 46
operates, feeder device 2 is certainly able to receive high
received voltage Vr, meaning that operational reliability is
extremely high.
Next, with reference to FIG. 8, descriptions are given with regard
to a second embodiment, electric power supply device 1A, that
performs contact-type electric power supply, descriptions mainly
relating to points that are different to the first embodiment. For
the second embodiment, the overall configuration of component
mounter 9 equipped with electric power supply device 1A is the same
as with the first embodiment. FIG. 8 is a block diagram showing the
configuration of electric power supply device 1A of the second
embodiment. In FIG. 8, a range corresponding to one feeder device
2A is shown by a single dotted line. The thick arrows in FIG. 8
represent the flow of electric power, and the thin arrows represent
the flow of information and control.
Feeder device 2A includes regulator section 43 and receiver
terminal 47 as configuration elements of electric power supply
device 1A, and further includes motor 46 and component supply
control section 44A. On the other hand, pallet member 3A includes,
as configuration elements of electric power supply device 1A, drive
voltage supply section 61, control voltage supply section 62,
supply side control section 54A, power supply switching switch 63,
and power supply terminal reception section 57.
Drive voltage supply section 61 on the pallet member 3A side is a
direct current power source and supplies direct current
approximately the same as drive voltage VM to first input terminal
631 of power supply switching switch 63. Control voltage supply
section 62 is a direct current power source and supplies direct
current approximately the same as control voltage VC to second
input terminal 632 of power supply switching switch 63. Drive
current voltage supply section 61 and control voltage supply
section 62 configure the supply voltage adjusting section of the
present disclosure.
Power supply switching switch 63 functions as a portion of supply
side control section 54A. Power supply switching switch 63
switchably and selectively connects either first input terminal 631
or second input terminal 632 to output terminal 633. Output
terminal 633 is connected to power supply terminal reception
section 57. Switching operation of power supply switching switch 63
is controlled by control signal CS from supply side control section
54A. Supply terminal reception section 57 and related terminal
reception section 58 are collected in one connector reception
section and arranged on front plate section 32 of pallet member
3A.
Supply side control section 54A exchanges information with
component supply control section 44A on the feeder device 2A side
via related terminal reception section 58 and related terminal 48,
and exchanges information with control device 96 on the main body
side. Supply side control section 54A, in a similar manner to the
first embodiment, grasps the mechanism operating time period of the
feeder device 2A by receiving command information of component
supply operations from control device 96 to component supply
control section 44A. Also, supply side control section 54A sets the
time period other than the mechanism operating time period as the
control operating time period.
Further, supply side control section 54A sends control signal CS to
power supply switching switch 63 based on the mechanism operating
time period and the control operating time period. That is, supply
side control section 54A connects first input terminal 631 to
output terminal 633 during the mechanism operating time period, and
connects second input terminal 632 to output terminal 633 during
the control operating time period.
Receiver terminal 47 and related terminal 48 of the feeder device
2A side are collected as one multi-terminal connector, and are
arranged on the front surface of feeder device 2A. When feeder
device 2A is loaded to the loading position on pallet member 3A,
the multi-terminal connector of feeder device 2A is inserted into a
connector reception section of pallet member 3A. By this, power
supply terminal reception section 57 and receiver terminal 47 are
connected and contact-type electric power supply is possible. Here,
the voltage received by receiver terminal 47 is received voltage
Vr. Also, related terminal reception section 58 and related
terminal 48 are connected, and information is able to be exchanged
between supply side control section 54A and component supply
control section 44A.
Receiver terminal 47 is connected to regulator section 43 and motor
46. Receiver terminal 47 and motor 46 may be connected directly, or
may be connected via an open/close switch that enables power to be
cut. Also, receiver terminal 47 is directly connected to regulator
section 43. The internal circuit configuration of regulator section
43 is the same as the first embodiment as shown in FIG. 6.
Next, operations and effects of the second embodiment of electric
power supply device 1A configured as above are described. As given
above, supply side control section 54A grasps the mechanism
operating time period and the control operating time period of each
feeder device 2A, and controls power supply switching switch 63. By
this, during the mechanism operating time period, first input
terminal 631 of power supply switching switch 63 is connected to
output terminal 633, and direct current voltage approximately the
same as drive voltage VM of drive voltage supply section 61 is
output from power supply terminal reception section 57. At this
time, feeder device 2A receives drive voltage VM as received
voltage Vr. Also, during the mechanism operating time period,
second input terminal 632 of power supply switching switch 63 is
connected to output terminal 633, and direct current voltage
approximately the same as control voltage VC of control voltage
supply section 62 is output from power supply terminal reception
section 57. At this time, feeder device 2A receives control voltage
VC as received voltage Vr.
When this occurs, loss Wt of regulator section 43 during the
control operating time period, similar to as described with the
first embodiment, is reduced more than with conventional
technology, for which received voltage Vr is not reduced. That is,
for the contact-type electric power supply of the second embodiment
as well, in a similar manner to the contactless electric power
supply of the first embodiment, electric power loss and temperature
increase in feeder device 2A are effectively reduced.
Next, with reference to FIG. 9, descriptions are given with regard
to a third embodiment, electric power supply device 1B,
descriptions mainly relating to points that are different to the
first and second embodiments. For the third embodiment, the overall
configuration of component mounter 9 equipped with electric power
supply device 1B is the same as with the first embodiment. FIG. 9
is a block diagram showing the configuration of electric power
supply device 1B of the third embodiment. In FIG. 9, three feeder
devices 2 out of n feeder devices 2 loaded on pallet member 3B are
shown by single-dotted lines, with the corresponding range shown by
solid lines. The thick arrows in FIG. 9 represent the flow of
electric power, and the thin arrows represent the flow of
information and control.
Feeder device 2 includes, as configuration elements of electric
power supply device 1B, receiver coil 41, rectifier section 42,
regulator section 43, and receiver side related section 45. The
configuration of feeder device 2 is the same as the first
embodiment, so descriptions are omitted. However, pallet member 3B
includes, as configuration elements of electric power supply device
1B, drive voltage supply section 71, control voltage supply section
72, supply side control section 54B, n pieces of power supply
switching switch 73, and n pieces of supply side related section
56.
Drive voltage supply section 71 on the pallet member 3B side is
configured from direct current power source 51, half-bridge circuit
52, and half bridge control section 55 described in the first
embodiment. However, half-bridge control section 55 controls the
occurrence frequency of high voltage side control signal CH and low
voltage side control signal CL always to be highest, without
receiving voltage setting command CV. Thus, drive voltage supply
section 71 always outputs average value VaM of alternating current
voltage Va shown in FIG. 4. The output destination of average value
VaM of alternating current voltage Va is across the all of the n
pieces of the first input terminal 731 of power supply switching
switch 73.
On the other hand, control voltage supply section 72 is also
configured from direct current power source 51, half-bridge circuit
52, and described in the first embodiment and half bridge control
section 55. However, half-bridge control section 55 controls the
occurrence frequency of high voltage side control signal CH and low
voltage side control signal CL always to be lowest, without
receiving voltage setting command CV. By this, control voltage
supply section always outputs average value VaC of alternating
current voltage Va shown in FIG. 5 (about half of average value
VaM). The output destination of average value VaC of alternating
current voltage Va is across the all of the n pieces of the second
input terminal 732 of power supply switching switch 73. Drive
current voltage supply section 71 and control voltage supply
section 72 configure the supply voltage adjusting section of the
present disclosure.
The n pieces of power supply switching switch 73 function as a
portion of supply side control section 54B. Each power supply
switching switch 73 switchably and selectively connects either
first input terminal 731 or second input terminal 732 to output
terminal 733. Each output terminal 733 is connected one-to-one to n
pieces of supply coil 53. Switching operation of power supply
switching switches 73 is controlled by control signals CR from
supply side control section 64A, with control being performed
independently for each.
Supply side control section 54B exchanges information with
component supply control section 44 on each feeder device 2
independently for each feeder device 2 via each of the n pieces of
supply side related section 56. Supply side control section 54B
also exchanges information with control device 96 on the main body
side. Supply side control section 54B, in a similar manner to the
first and second embodiments, grasps the mechanism operating time
period of the n feeder devices 2A by receiving command information
of component supply operations from control device 96 to the n
component supply control sections 44. Also, supply side control
section 54B sets the time period other than the mechanism operating
time period for each of the feeder devices 2 as the control
operating time period.
Further, supply side control section 54B sends control signal CR
individually to each power supply switching switch 73 based on the
time period of each of the feeder devices 2. That is, supply side
control section 54B, when electric power should be supplied from
drive voltage supply section 71 for a feeder device 2 during the
mechanism operating time period, connects first terminal 731 of
power supply switching switch 73 to output terminal 733 for that
feeder device 2. Also, supply side control section 54B, when
electric power should be supplied from control voltage supply
section 72 for a feeder device 2 during the control operating time
period, connects second terminal 732 of power supply switching
switch 73 to output terminal 733 for that feeder device 2.
With electric power supply device 1B of the third embodiment
configured as above, for feeder devices 2 during the mechanism
operating time period, electric power is supplied from drive
voltage supply section 71, with received voltage Vr being
approximately the same as drive voltage VM. Also, for feeder
devices 2 during the control operating time period, electric power
is supplied from drive voltage supply section 72, with received
voltage Vr being lower than drive voltage VM. Thus, the effects of
effectively reducing the electric power loss and temperature
increase of each feeder device 2 is similar as that of the first
and second embodiments.
Further, with electric power supply device 1B of the third
embodiment, there are n (multiple) feeder devices 2 with regulator
section 43, the supply voltage adjusting section is configured from
drive voltage supply section 71 adjusted such that the received
voltage approximately matches the drive voltage and control voltage
supply section 72 adjusted such that received voltage Vr is lower
than drive voltage VM, and supply side control section 54B causes
electric power to be supplied from drive voltage supply section 71
to feeder device 2 during the mechanism operation time period, and
causes electric power to be supplied from control voltage supply
section 72 to feeder device 2 during the control operating time
period.
Accordingly, it is possible to replace n sets of half-bridge
circuit 52 and half-bridge control section 55 required to
correspond to n feeder devices 2 of the first embodiment with one
set of drive voltage supply section 71 and control voltage supply
section 72. Accordingly, the configuration on the pallet member 3
side becomes simpler, greatly contributing to reducing the cost of
pallet member 3.
Note that with the first embodiment, in order to make received
voltage Vr on the feeder device 2 side appropriate, other methods
except for making the occurrence frequency of high voltage side
control signal CH and low voltage side control signal CL lower may
be applied. For example, a method that makes the duty ratio small
by shortening signal continuation time T1 of high voltage control
signal CH, or a method of controlling direct current voltage Vd of
direct current power source 51 may be used to lower average value
VaC of alternating current voltage Va of supply coil 53. Further,
average value VaC of alternating current voltage Va of supply coil
53 may be lowered by a circuit configuration different to
half-bridge circuit 52 and half-bridge control section 55. Even
further, the method of voltage conversion of regulator section 43
on the feeder device 2 side may be different. Various other
applications and modifications are possible for the present
disclosure.
INDUSTRIAL APPLICABILITY
Use of the electric power supply device of the present disclosure
is not limited to feeder device 2 or 2A of component mounter 9
described in the embodiments above; use may be applied widely, such
as to other types of board work machines and processing machines
and assembly machines that produce other goods.
REFERENCE SIGNS LIST
1, 1A, 1B: electric power supply device; 2, 2A: feeder device
(receiver side device, loading device); 3, 3A, 3B: pallet member
(supply side device, main body of board work machine); 41: receiver
coil (contactless receiver terminal); 42: rectifier section; 43:
regulator section; 435: switching element; 44: component supply
control section (receiver side control section); 45: receiver side
related section (control related section); 46: motor; 47: receiver
terminal; 48: related terminal; 51: direct current power source;
52: half-bridge circuit; 52H: high voltage side switching element;
52L: low voltage side switching element; 53: supply coil
(contactless electric power supply element); 54, 54A, 54B: supply
side control section; 55: half-bridge control section; 56: supply
side related section (control related section); 57: power supply
terminal reception section; 58: related terminal reception section;
61: drive voltage supply section; 62: control voltage supply
section; 63: power supply switching switch; 71: drive voltage
supply section; 72: control voltage supply section; 73: power
supply switching switch; 9: component mounter; 91: base; 92: board
conveyance device; 94: component transfer device; 95: component
camera; 96: control device
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